Upsetting or heading machine for bolts, rivets, and the like.



No 837,919. 7 'PATBNTED DEC. 11, 1906.

. P. R. DUNGAN. UPSETTING OR READING MACHINE FOR BOLT$, RIVETS, AND THE LIKE.

APPLICATION FILED AUG.9, 1902.

3 SKEETS-BHEET 1- N "W/TIVESSES; //v VENTOl-I m vi fi 3 ATTORNEYS,

No. 837,919. PATENTED DEO.11, 1906. P. R. DUNCAN. UPSETTIN G OR HEADING MACHINE FOR BOLTS, RIVETS, AND THE LIKE.

APPLICATION FILED AUG. 9. 1902.

3 SHEETS-SHEET 2.

IN I

WITNESSES INVENTOH I %Wi6%.i mm

v ATTORNEYS,-

PATENTED DEG. 11,,1906.

I. R. DUNCAN. UPSETTING UR HEADING MACHINE FOB, BOLT, RIVETS, AND THE LIKE.

APPLIOATION FILED AUGA). 1902.

3 SEEETS-SHBET 3.

' UNITED STATES PATENT orr on.

PERRY R. DUNCAN, OF CLEVELAND, OHIO, ASSIGNOR, BY DIRECT AND MESNE ASSIGNMENTS, OF ONE FOURTH TO ALBERT E. LYNCH, ONE-FOURTH TO EDWARD FLYNN, TRUSTEE, AND. ONE- HALF TO ALBERT E. LYNCH, TRUS"EE, OF CLEVELAND, OHIO UPSETTING 0R HEADING MACHINE FOR BOLTS, RlVETS, AND THE LIKE.

Specification of Letters Patent.

Patented Dec. 11, 1906.

Applicatid filed August 9,1902. Serial No. 118.984.

To all LL/71 0711 it 11111.;1 concern:

Be it known that I, PERRY R. DUNoAN, a citizen of the United States of America, residing at Cleveland, in the county of Guyahoga and State of Ohio, have invented certain new and useful Improvements in Upsetting or Heading Machines for Bolts, Rivets, and the Like and I hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it pertains to make and use the same.

This invention relates to in'iprovements in upsetting or heading machines for bolts, rivets, and thelike.

The object of this invention is to provide a machine capable of-producing a bolt or rivet havin a sym1netrically-f0rmed head, such as will not require any finishing after leaving the machine.

The principal difficulty met with in the manufacture of rivets and bolts has been to produce a rivet or bolt having a perfect or symmetrica head free from the flange or flash which is formed around one side of the ,head during the upsetting process. It is well known to those skilled in the art that when a blank is sheared from a bar by a machine of the type now commonly used the sheared end of the bar is distorted in a peculiar and characteristic .manner-that is to say, the pressure of the moving die on one side of the-bar and the resistance of the shear on the other side of the bar distort the end of the bar, compressing, as I believe, the side of the bar nearest. the moving die and forming a depression of the opposite side and also drawing up the edge of the bar at the side where the depression is formed in the shape of a beak, as shown in Fig. 8 of the drawings. Now .when the heading-die is brought down upon the blank it comcs in contact first with the side of the blank at which the beak is formed, and the metal is caused to flow toward the sid'eof the blank which is already compressed, thereby causing an excess of material at that side of the head, which, as I believe, produces the flash.

I have discovered that a symmetrical head will be formed on the blank if after each shearing ormration the baris manipulated so as to bend the end rod each time after it is embodying my invention. Fig.

thereof in approximately the same degree in the opposite direction to that in which it was bent during the shearing operation, so that the top edge opposite the beak will come in contact with the headingdie first, and that this method of treatment produces an entirely different result tothat which is secured by simply straightening the sheared.

My invention therefore consists in provid-, ing a machine of the character indicated, into which the bar may be fed in the usual or normal manner and which will manipulate the end of the bar within the machine during the shearing operation so as to impart to the rod a curve the trend of which is in the opposite direction to that in which the rod was bent by the shearing operation.

My invention also consists in certain features of construction and combination of parts, as illustrated in the drawings and hereinafter described in the specification and pointed out in the claims.

In the accompanying drawin s, Figure 1 is a plan view of a bolt or rivet making machine 2is a section on line 2 2, Fig. 1. Fig. 3 is a detail View showing a horizontal section of a portion of the front of the machine. Fig. 4 1s a detail view showing a front elevation of the dieblock with my device for manipulating the end of the bar secured thereto. Fig. 5 isa section on line '5 5, Fig. 2. Fig. 6 is a section on line 6 6, Fig. 5. Fig. 7 is a detail view in elevation of a portion of the front of the machine, Fig. 8 shows the shape of the blank when sheared by a machine of the usual type. Fig. 9 shows a bolt-head with flash asformed from a blank of the shape shown in Fig. 8. Fig. 10 shows the shape of a blank when sheared by my machine. Fi 11 shows a completed b'olt free from fiasji, as produced by my machine.

Again referring to the drawin s, a designates the stationary horizontal? -arranged bed of the machine.

a represents the main driving-shaft, which is provided with two cranks and a. On the shaft 0 are mounted the driving-wheels a. and (1. Two guideways b and c are formed in the bed a parallel with each other and perpendicular with the shaft a.

A guideway d is formed of the machine and are arranged in the front end of the bed parallel with the shaft a and in open communication with the guideways b and c.

1) represents a toggle-block arranged to slide freely in the guideway b, and it is operatively connected with the eranka by a pitman b 0 represents a plunger-block arranged in the guideway c and operatively connected with the crank a by mean of apitman 0 The front end of the block 0 is adapted to receive and grip the heading-die or upsetting- )-unch c. In the guideway 06 is arranged a stationary block (1 and a movable die-block d. The dieblock is operativcly connected to the sta tionary block d and to the toggle-block b by a toggle device a As the block (1 is station ary, the movement of the block 1) iii the guideway I) will cause a corresponding movement of the block (Z in the guideway d. To the die-block d is secured a die 0 in any approved manner. The other die 6, which cooperates with the die 6 in holding the blank while it is being headed, is rigidly secured in the bed a. In the front end of the bed athat is, the end at which the operator stands when feeding the bar to the machine and whichl have indicated by'the reference-letter a -is formed a large opening a The opening a is similar fo'the opening made in the breastplate of any machine of this character to allow the bar to be inserted, so that the dies can engage therewith. in the guideway (1, extending along the front wall thereof, is arranged a brcastplate h, in which is formed an O1)( hing h in line with the opening a, through which the bar passes when it is being fed to the machine. The breastplate h is .formed sepa rately from the front portion a only as a matter of convenience, and therefore the front portion a) and the plate It may be regarded one piece. The shear-plate t, which is about half as thick as the plate lb, is immovably mounted in a seat formed in the plate It, so that the blade thereof extends across one side of the opening it, but leaving the opening it sufficiently free to. permit the bar being shoved theretln'ough. The f ace of the shearplate t is arranged flush with the face of the plate h, so that it will offer no impediment to the movement of the die 6 in the guideway d. The movement of the die e across the face .of the shear-plate 'i shears the blank from the bar, as in all machines of this particular style.

In the face of the plate h which is toward the die-block d is formed a horizontal groove 71/ which communicates with the opening it.

. The roove It has a depth equal to about half the tiickness of the plate 71:. in the face of the die-block d which is toward the plate It is formed a horizontal groove-d", (see fig. 1,)

arranged to register with the groove It in the plate h. in the same face of the die-Mock 1 in which the horizontal groovid" is formed l are also formed two vertical groowsd and 1 d', which communicate with the horizontal groove d. In the vertical groove is arranged a bar d, on the upper end of which is formed a horizontal flange In the flange d is secured an adjusting-screw d, which engages with ,a thread d, formed in the dieblock d The lower end of the bar d" is made in the form of an inverted wedgethat is to say, the bar at the side next to the groove d is cut away, so that the bar is greatly reduced at a point somewhat below its center and then increases in thickness toward the bottom. 1n the vertical groove (1 is arrangeda bar d", on the upper end of which is formed a horizontal flange d, in which is secured an adjusting-screw d, which engages with a thread d, formed in thedic-block d. The lower end of the bar (0" is also wedge.- shaped'that is to say, the bar is cut away at its lower end, forming a chisel edge, the beveled face of which is parallel with the adjacent face of the lower end of the bar d.

In the guideway formed by the two grooves h and I)" is arranged a plate Z. One edge of the plate l is beveled and abuts against the lower end of the bar d. In the plate I is formed an opening Z, arranged so that the end of the bar d will pass therethrough. By properly adjusting the bars (1 and d the plate I can be securely locked to the block d To the front end of the plate 1 is secured a plunger m, which lies entirely within the groove formed in the breastplate h; The plunger m is secured to the plate 1 by means of a T-shaped lug m, which is formed integral with the plunger m, and which enters a T-shaped groove Z formed in the end of the plate L The forward end of the plunger m is slightly beveled, so that it will strike a little below the sheared endof the rod.

A sto p or bumper-k is arranged in the seat formed .in the front surface of the plate It at the side of the opening it o )posite to the edge of the shearl'ate "i. "his stop It is preferably wedge-s aped in both cross and vertical section and extends about half-way through the plate h. To the sto 7c is removably secured a plate 7e, whic 'forms a facing which can be taken off when it becomes worn or abraded and replaced by a new plate. The obje'ctof this stop is to prevent the end of the rod from bending or buckling too much.

In the opening a in the front end of" the machine-bed a mounted a vertical plate n, which fits snugly int o the said-opening a at one side thereof and with its inner face flush with the outer face of the plate I and. withits vertical edge in line with the edge of the shear-plate t. A guideway comprising a vertical side portion a and a horizontal bottom portion n formed integral with the plate '11, extends out to the mouth of the opening a. At the outer end of the bottom pprtion a is formed a depending flange n,

I gage.

' shears the blank position to be headed.

clamps it against When the movable die has about reached the limit ofits forward movement, the plunger m, which is secured to the plate Z, which in turn is clamped to the movable die-block by the bars (1 and (1 is brought into contact with theend of the rod. Now when the plunger m strikes the red as the rod-is braced at its end by the shear-bladeandby the plate 12 at a point below where the plunger strikes it the rod is caused to bend in theopposite di rection to that in which it was bent when the blank was sheared. As theend of the rod will be bent more or less during the shearing olperation, depending on s earing device, the stroke of -the plunger must be regulated accordinglyin order to ward bend the rod to a corresponding degree in the opposite direction.

This adjustment is accomplished by raising or lowering the bars d and d by means of the respective screws (l and cl, thereby shoving out or drawing back the plate 1, which in turn causes the plunger m to exert pressure on the end of the ar for a longer or shorter period.

What I claim is 1. In an upsetting-machine, the combination of a bed, an upsetting-punch, a stationary shearingie, a movable die, means for actuating the same,. a

and from the stationary shearing-die and arranged to come in contact with the stock-rod at a point below where it has been sheared and means for supporting the stockrod on theside opposite to that on which the plunger strikes above and-below the points at which the plunger strikes so, that the impact'of the plunger will bend the rod be' tween the points of support.

2. Inan upsetting-machine, the combination of a bed, an upsetting-punch, a stationary shearing-die, a movable die, means for actuatingthe same, aplunger movable toward and from the stationary shearing-die and arranged to contactwith the stock-rod at apoint below where it has been sheared, means for supporting the stock-rod on the side opposite to and above and below the point at which the plunger strikes so that the impact of the plunger will bend the rod between the points of support and means for adjusting the travel of said plunger.

3. In an upsetting-n'iaehine, th'e combinathe sharpness of the plunger movable tov ranged to contact with I tion with an upsetting-punch of a breastplate, a support, a stationary shearmgd1e, I said support and said die being so formed as i to support the stock-rod at one side at two points, leavingthe portion of said stock-rod between the two points unsupported, a movable die, means for actuating'the same, a plunger movable toward and from the sta e tionary shearing-die and arran ed to contact with the stock-rod between and on the opposite side of the two points of support thereof and mechanism for actuating said plunger to crowd the stock-rod into the space between the two points of support thereof.

' 4. In an upsetting-machine, the combination with an upsetting-punch of a breastplate, a support, a stationary shearing-die, said support and said die being so formed as to support the stock-rod on one side at two points, leaving the portion of the stock-rod between the said two points unsu ported, a movable die,1neans for actuating t 1e same, a

tionarv shearing-die and arran ed to contact with the stock-rod between an on the opposite side of the two points of support thereof and mechanism for actuating the said plunger to crowd the stock-rod into the space between the two points ofsupport thereof and means for adjusting said mechanism so as to increase or decrease the travel of said plunger in order to r gulate the crowding of the stock-rod.

5. In an upsetting-machine, the combination with an upsetting-punch of a breastplate, a mounted thereon, said su port and die' being so formed as to support t 1e stock-rod on one side at two points, a movable die, means for actuating the same, a plunger mounted in from the stationary shearing-die and arthestoek-rod between and on the opposite side of the two points .of support thereof and mechanism for actuating the said plunger to crowd the stock-rod into the space between the two points of support tl'iereof and means for adjusting sair mechanism for actuating the plunger soto increase or decrease the travel of said plunger in order to regulate the erowding'of the stock-rod. I

6. In a machine for heading bolts, rivets and the like, wherein the blank to be headed is sheared from a continuous rod, a bed, a face-plate arranged in the front part of said bed, an opening formed in said face-plate, a shear-plate seated in said ex 'end across one side Igroovc formed in the in l of said opening, a ner surface oi said opening, a stop removably secured in the 1 said opening at the side opposite the shearplate, a die-block; a die secured to said dieblock, and arranged to travel across the face the breastplate and movable toward and a f ace-plate so as to face-plate and c1nnmunicating with the said.

support, a stationary shearing-die,

&

of said shear-plate, a groove formed in said die-block so as to register with the groove in the said face-plate, aplate arranged in the groove in the said die-block and extending into the groove in the face-plate, a plunger secured to said plate and arranged to enter the said opening in the faceplate when the said plate is advanced, and means for securing the said plate to the said die-block, substantially as described and for the purpose set forth.

7. In a machine for heading bolts, rivets and the like, wherein the blank to be headed is sheared from a continuous rod, :1 bed, a faceplate arranged in the front part of said bed, an opening formed in said face-plate through which the rod is fed to the machine, a. shearplate seated in said face-plate so as to extend across one side of said opening, a groove formed in the inner surface of said face-plate and connnunicatingwith the said opening through the side wall thereof, a stop mounted in said opening at the side opposite the shearplate, a removable facing secured to said stop, a die-block, a die secured to said dicblock and arranged to travel across the face of the said shear-plate, a groove formed in said die-block and arranged to register with the groove in said f ace-pl ate, a plate arranged in the guidewayfermed bythe said grooves, a plunger secured to said plate and lying ent irely within the groove in the face-plate and means for securing said plate to the die-block, for the purpose set forth.

8. In a machine for heading bolts, rivets and the like, wherein the blank to be headed is sheared from a continuous rod, a bed, a face-pl: e arranged in the front part of said bed, an opening formed in said faceplate, a shearlate seated in said face-plate so as to exten across one side of said opening, a groove formed in the inner surface of said face-plate and communicating with said opening through the side wall thereof, a die-block, a die secured to said die-blockand arranged to travel across the face of the said shearplate, a groove formed in said die-block so as to register with the groove in the said facelate, a plate arranged in the guideway ornied by the said grooves, a plunger secured to sad plate and lying entirely within the groove in the face-plate, and means for adjustably securing the said plate to the said die-block,'for the purpose set forth.

9. In a machine for heading bolts, rivets, and the like, wherein the blank to be headed is sheareddrom a continuous rod, a bed, a face-plate arranged in the front part of said bed, an opening formed in said face- )late through which the rod is fed to the machine, a shear-plate seated in said face-plate so as to extend across one side of said opening, a groove formed in the inner surface of said faceplate and communicating with the said opening through the side wall thereof, a die-block, a

bed, an openin formed in said facedie secured to said die block and arranged to travel across the face of said shear-plate, a horizontal groove f/ormed in said die-block and arranged to register with the roove in said fate-plate. av plate arranged in the groove in said die-block and extending into the groove in said face-plate, said die-block having two vertical grooves communicating with the horizontal groove in said die-block, and bars mounted in said vertical grooves and arranged to engage with and lock said plate in the said horizontal groove, substantially as described and for the purpose set forth.

10. In a machine for heading bolts, rivets and the like, wherein the blank to be headed 1s sheared from a continuous rod, a bed, a

face-plate arranged in the front part of said bed, an opening formed in said face-plate through which the rod is fed to the machine, a shear-plate seated in said face-plate so as to extend across the side of said opening, a groove formed in the inner surface of said face-plate and comnnlnicating with the said opening through the side wall thereof, a dieblock, a die secured to said die-block and arranged to travel across the face of said shearplate, a horizontal groove formed in said dieblock and arranged to register with the groove in said faceplate, a plate arranged in the horizontal groove in the said die-block, and extending into the groove in the'said faceplate, said die-block having two vertical grooves communicating with the horizontal groove in the said die-block, bars mounted in said vertical grooves, and provided with oppositelyarranged wedge-shaped ends arranged to engage with the said plate, means for raising and lowering said bars so as to adjust the said plate in the said horizontal groove'in said die-block, and a plunger secured to the said plate and lying entirely within the groove in the face-plate, substantially as described and for the purpose set forth.

11. In a machine for heading bolts, rivets and the like, wherein the blank to be headed is sheared from a continuous'rod, a bed, a face-plate arranged in the frontv part of said late through which the rod is fed to the mac ine, a shear-plate seated in said face-plate, so as to extend across one sideof 'said opening, a groove formed in said face-plate and communicating with the said-openinr 1n the said face-plate through the side wal thereof, a die-block, a die secured in said die-block and arranged to travel across the face of said shear-plate, a plate secured in said die-block and extending into the said groove in the said face-plate, and a plunger removably secured to said plate and arrangedto enter the said opening in the said face-plate when the said die-block is advanced, substantially as described'and for the purpose set forth.

. I extend across one side of said opening, a

set forth.

' bed,

ace-plate and communicating with the said into the groove formed in the said p ate, suband'the like, wherein 12. In a machine for heading bolts, rivets, and the like, wherein the blank to be headed is sheare from a continuous rod, a bed, a face-plate arranged inthe front part of said an-opening formed in said face-plate, a'

shear-plate seated in said face-plate soas to oove formed in the inner surface of said opening, a die-block, a die secured to said die-block and arran ed to travel across the face of'said shear-p ate, a late'secured to said die-block and arranged to extend into the groove formed in the said face-plate, a T shap'ed groove formed in the end of said plate, a plun er arranged entirely within the oove in sai face-plate, and a T-shaped lug ormed on said plunger. andarran ed to fit stantially as described and for the purpose 13, v In a machine for heading bolts, rivets, the blank to beheaded is shearedf'rom a continuous rod, 2. bed,. an openingformed'in the frontend of said bed, a face-plate arranged in said bed behind said 0 ening, anv opening formed in said face-. p ate through which the rod is fed to the machine, ashesir-plate seated in said face-plate plate through the said wal so as to extend across one side of said openlng n said face-plate, a 'st-o arranged in the said opening in said face-p ate at the opposite side from the said sh ,arranged in the opening in the said bed and openin opening ear-plate, a plate having a vertical edge in line with the shearplate, a groove formed in the inner face of said face-plate andcommunicating with said i in the said face-plate through the Wall t ereof, a plunger arranged in said groove, and means for reciprocating the said plunger in said groove, for the purpose set forth. 14. In a machine for heading bolts, rivets and the like, wherein the blank to be headed I is' sheared from a continuous rod, a bed, an formed in the front part of said bed, a face-plate arranged in said'bed behind said opening, an opening formed in said faceplate through which the rod is fed to the machine, a shear-plate seated in said face-plate, so as to extend across one side of said opening, in said face-plate, a stop arranged in the said opening in said face-plate at the oppo- I site side from the said shear-plate, a late ranged in the o ening in the said ed and having a vertica edge in line with the cutting edge of the said extendin out to the mouth of the opening in the said ed, a groove formed in the inner surfaoe of the said face-plate and communicating with the said openin the said facethereof, a plungerarranged in said groove and means for reciprocating the said plunger in said groove, for the ui'pose set forth.

15. 11 an upsetting-machine, the combination with. an upsetting-punch, of a breastplate, a stationary shearing-die mounted thereon, said plate and die being so formed as to support two points, a movable die, means for actuating the same, a plunger mounted in the the stockrod on one side at shear-plate a guideway secured to the said last-mentioned plate and breastplate and movable toward and from i the stationary shearing-die and arranged to contact with the stock-rod between, and on the op}posite side of, the two points of support t said plunger to crowd the stock-rod into the s ace between the two points of support t ereof.

1 6. In an upsetting-machine, the combi natlon with an upsetting-punch, of a breast-* plate, a stationary shearing-die mounted on 'said breastplate, said plate and die being so formed as to support the stock-rod on one side at two points a plunger mounted in the breastplate and movable toward and from the stationary shearing-die and arranged to contact with the stock-rod between, and on the opposite side of, the two points. of support thereof, a'movable shearing-die, a carrier therefor, and an adjustable abutmenton said carrier and arranged to engage said plunger to crowd the stock-rod into the space between the two points of support thereof. i In testimony whereof I sign the foregoing specification, in the presence of two witnesses, this 21st day of July, 1902, at Cleveland, Ohio.

' PERRY R. DUNCAN.

ereof, and mechanism for actuating j. 

